Detonator

ABSTRACT

In the present invention; a new detonator was developed which can be used with safety fuse, electrical fuse head or non-electric shock tube. It can be instantaneous or with delay. These detonators are made without any lead salts and sensitive primary explosives. These detonators are safe to handle. These detonators function exactly like conventional detonators. The application of these detonators is also same as that of conventional detonators. The safety in handling is very high when compared to conventional detonators.

FIELD OF THE INVENTION

The present invention relates to a process of manufacturing of thedetonators and more particularly to the safe lead free detonator.Furthermore the present discloses of a simple method of manufacturing adetonator which is safe to handle and involves no additional costs.

BACKGROUND OF THE INVENTION

Generally used detonators contain primary explosives like lead azide andlead styphnate. These two chemicals are very sensitive to friction andimpact. The detonators made of these chemicals should be handled verycarefully.

A new detonator has been made by substituting the hazardous chemicalswith a new chemical primer, which is relatively much safer & do notcontain lead.

SUMMARY OF THE INVENTION

In the present invention, a new detonator was developed which can beused with safety fuse, electrical fuse head or non-electric shock tube.It can be instantaneous or with delay. These detonators are made withoutany lead salts and sensitive primary explosives. These detonators aresafe to handle. These detonators function exactly like conventionaldetonators.

The application of these detonators is also same as that of conventionaldetonators. The safety in handling is very high when compared toconventional detonators.

Earlier safe and lead free detonators were made. But these detonatorsare costly and processing of these detonators also tedious.

The present invented detonator manufacturing is simple. They are safe tohandle. No additional costs are involved.

The technology is safe & simple. The products invented are safer &contain no lead salts. A detonator shell; secondary explosive; A delayelement; A safe primary explosive; A metallic cup.

DESCRIPTION OF THE DRAWINGS

The invention is further described by way of example with reference tothe accompanying drawings in which:

FIG. 1 is a horizontal section of the detonator in which the componentsare shown as shell (1), P.E.T.N (2), N.H.N.+Al. Powder (3), Bead (4),Fuse Wire (5), Fettering (6), Comb (6), Plug (8), Lead Wire (9).

DESCRIPTION OF THE INVENTION

A detonator shell can be made of copper coated steel; aluminium; copper;brass etc.

A delay element can be chemical delay or electronic delay.

Secondary explosive can be RDX; HMX; tetryl; PETN; teracene etc.

The safe primary explosive can be complex compound made of nitrates ofzinc; cadmium; nickel; palladium and/or platinum with hydrazinesulphate; Hydrazine hydrate; anhydrous hydrazine with variousconcentration varying from 5%-98%.

Description of the specific embodiment is given by way of examples:

EXAMPLE-1

Aluminium shell 45 mm length is taken. In that 400±100 mg ofPETN/RDX/HMX/TETRYL/TETRACENE is filled and pressed. About 350±100 mg ofprimer is added and over that one cup is placed and pressed. 50detonators are made in same way & assembled with electrical squib. Allthe safety and performance tests are conducted and results are found tobe as per the specifications.

EXAMPLE-2

Aluminium shell 45 mm length is taken. In that 400±100 mg ofPETN/RDX/HMX/TETRYL/TETRACENE is filled and pressed. About 350±100 mg ofprimer is added. A delay element of required timing is placed over theprimer charge and pressed. The filled shells are assembled with delayfuse head and long plug and crimped. Similar type of 50 detonators aremade. All the safety and performance tests are conducted and results arefound to be as per the specifications.

EXAMPLE-3

Aluminium shell 45 mm length is taken. In that 400±100 mg ofPETN/RDX/HMX/TETRYL/TETRACENE is filled and pressed. About 350±100 mg ofprimer is added and over that the cup is placed and pressed. 50 numbersare made and fired with safety fuse. Results are as per thespecification.

1. A detonator which comprises of a safety fuse, electrical fuse head ornon-electric shock tube, without any inner metallic cup, withinstantaneous or with delay and having made without any lead salts andsensitive primary explosives whereby making them safe to handle whilefunctioning exactly like conventional detonators.
 2. A detonator asclaimed in claim 1, wherein explosive can be made by complex compoundsmade of nitrates of zinc, cadmium, nickel, palladium and platinum withhydrazine sulphate, hydrazine hydrate, anhydrous hydrazine with variousconcentration varying from 5%-98% with metallic powder.
 3. A detonatoras claimed in claim 1, wherein NHN is mixed with metallic powder of 0-5%wt.
 4. A detonator as claimed in claim 3, wherein metallic powderconsists of but not limited to aluminium, silicon, boron, zirconium,iron and most preferably aluminium.